phosphoric acid

other acid

Found in 375 ingredients across the CompKitchen flavor graph.

Look up another compound — search by name, CAS number, PubChem CID, or FEMA #.

2D Lewis Structure

Formula: H3O4P
Molecular weight: 97.995 g/mol
PubChem CID: 1004 — full record on PubChem

Properties

Odor threshold — in a food matrix: 0.018 ppb – 10.0 ppb median 5.0 ppb · 2 published values · see all 2 with sources
Volatility: low
CAS number: 7664-38-2
Retention index: 1295

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

✓ Exact match

FEMA number: 2900
GRAS publication: GRAS 3
FEMA primary name: PHOSPHORIC ACID

Use-level matrix not extracted for this substance — check the source publication for current ppm guidance.

Source: FEMA GRAS publications 1-33.

Published thresholds

2 measured values from the literature. Grouped by what was actually measured — a threshold smelled in clean water, tasted in the mouth, or measured in a real food are three different quantities and are not pooled.

In a food matrix

0.018 ppb – 10.0 ppb

Measured in a real food, where the matrix shifts detection — not a clean-water value.

Threshold	Matrix	Source	Paper
0.018 ppb	water (food: unknown)	Literature corpus	—
10.0 ppb	water (food: milk)	Literature corpus	—

Only values we can attribute are listed. Where a compendium's licence does not permit public attribution its figures are omitted here, so every number on this page traces to a citable source.

Found in

Measured impact first, then profile share

Every ingredient known to contain phosphoric acid. Ingredients with a measured concentration come first, ranked by odour activity; the rest follow by how large a share of that ingredient's profile this molecule is. The figure beside each is how many different compounds that ingredient has in total — not the concentration of phosphoric acid in it.

85 cmpds

103 cmpds

103 cmpds

104 cmpds